Stabilization of the new, well-defined behavior for the locals() function, ensuring consistent debugger performance. Release Status in December 2025 By December 2025, the Python ecosystem had moved forward:
The biggest news in the 3.13 cycle was the introduction of the . In 3.13.0, it was experimental—fast but sometimes unpredictable. python 3.13.1 release news december 2025
The "free-threaded" build (the ability to run Python code in parallel without the Global Interpreter Lock) has undergone significant bug-bashing in this patch release. Stabilization of the new, well-defined behavior for the